Question

Name the following compounds

Short answer

The name of the compounds will be

1. 4,5-dichloro-3-hexanone
2. 2,3-dimethylpentanal
3. 3-methylbenzaldehyde

Step-by-step solution

Determine name of the compound in part (a)

(a)

Presence of six carbon atoms results in naming the compound as hex. The chlorine atoms are attached with the carbons placed at 4^th and 5^th position. And there is one double bond in between oxygen and carbon atoms present in the 2^nd position. Therefore, the name of the compound will be 4,5-dichloro-3-hexanone.

Determine name of the compound in part (b)

(b)

Presence of five carbon atoms results in naming the compound as pent. The two CH₃ (methyl) groups are attached with the carbons placed at 2^nd and 3^rd position. And there is one double bond in between oxygen and carbon atoms present in the last or fifth position. Therefore, the name of the compound will be 2,3-dimethylpentanal.

Determine name of the compound in part (c)

(c)

Presence of CHO group depicts that the compound is an aldehyde. One methyl group is attached with the third position. Presence of benzene ring in the compound results in naming the compound as 3-methylbenzaldehyde.